You can use URL modifications (or URL mods, as we like to call them) to pre-populate fields in your form. Unlike setting predefined values in your form, URL mods pre-populate fields differently for each person that fills out your form. All you have to do is give them a special URL that contains the custom data you want to include in the form.

Sam Sandal Burlap Ninette Stripe Women's Edelman by Circus Slide Multi For example, if you know the name of someone you're sending your form to, you can pre-populate the name field on the form with their name.